The purpose of this task is to help students realize there are different ways to add mixed numbers and is most appropriate for use in an instructional setting.

This short video and interactive assessment activity is designed to teach third graders an overview of mixed operations.

This short video and interactive assessment activity is designed to teach fifth graders about multiplying and dividing - missing number.

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important aspects of the task and its potential use.

This short video and interactive assessment activity is designed to teach fourth graders about determining task length.

This short video and interactive assessment activity is designed to teach fourth graders about multiplying and dividing - missing number.

This course will address operations strategy by building on the concepts of:

Reengineering and process design developed by Dr. Michael Hammer.
Manufacturing strategy as developed in the literature, primarily by people at HBS.
Supply chain design and 3-D concurrent engineering literature as developed in Charles Fine’s book, Clockspeed: Winning Industry Control in the Age of Temporary Advantage. Perseus Books, 1999.

The concepts there emphasize the necessity of integrating product strategy, manufacturing strategy, and supply chain strategy. As a result, each of these will be touched upon in the course.

This short video and interactive assessment activity is designed to teach fourth graders about adding, subtracting, and multiplying with parentheses - missing operation.

Here is a video unit that I put together to teach number bonds on a kindergarten level. I have found these videos to be excellent classroom resources as well as something fun to share with parents. 

A 12-panel comic strip explaining what Boolean Operators are and how to use them.

This open education resource is a collection of collection of Concepts of Operating Systems in Question & Answer form that are useful as out-of-class activity while flipping the classroom.

Students explore what happens to a hot air balloon when they add or remove units of weight or heat. This activity is an informal exploration of addition and subtraction with positive and negative integers.Key ConceptsThis lesson introduces a balloon simulation for adding and subtracting integers. Positive integers are represented by adding units of heat to air and negative integers are represented by adding units of weight. The balloon is pictured next to a vertical number line. The balloon rises one unit for each unit of heat added or each unit of weight removed. The balloon falls one unit for each unit of weight added or each unit of heat removed from the air.Mathematically, adding 1 to a number and subtracting −1 from a number are equivalent and increase the number by 1. Adding −1 to a number and subtracting 1 from a number are equivalent and decrease the number by 1. Addition and subtraction with positive and negative numbers are explored formally in the next several lessons.Goals and Learning ObjectivesExplore the effects of adding or subtracting positive and negative numbers.

This lesson is about evaluating numerical expressions, and it was designed for adult learners who are preparing to take their High School Equivalency tests. This course will help the students evaluate numerical expressions correctly by following the correct order of operations, which includes the four basic arithmetical operations and the use of exponents and grouping symbols.

This presentation has points about some security concepts related to Operating Systems. William Stallings book was referred.

Lesson OverviewStudents represent inequalities on a number line, find at least one value that makes the inequality true, and write the inequality using words.Example: x > 2The solutions to x ≤ a are represented on the number line with an arrow pointing to the left from a closed circle at a.Example: x ≤ 2The solutions to x ≥ a are represented on the number line with an arrow pointing to the right from a closed circle at a.Example: x ≥ 2Goals and Learning ObjectivesRepresent an inequality on a number line and using words.Understand that inequalities have infinitely many solutions.

This short video and interactive assessment activity is designed to teach fifth graders about dividing whole numbers by decimals.

Rational Numbers

Type of Unit: Concept

Prior Knowledge

Students should be able to:

Solve problems with positive rational numbers.
Plot positive rational numbers on a number line.
Understand the equal sign.
Use the greater than and less than symbols with positive numbers (not variables) and understand their relative positions on a number line.
Recognize the first quadrant of the coordinate plane.

Lesson Flow

The first part of this unit builds on the prerequisite skills needed to develop the concept of negative numbers, the opposites of numbers, and absolute value. The unit starts with a real-world application that uses negative numbers so that students understand the need for them. The unit then introduces the idea of the opposite of a number and its absolute value and compares the difference in the definitions. The number line and positions of numbers on the number line is at the heart of the unit, including comparing positions with less than or greater than symbols.

The second part of the unit deals with the coordinate plane and extends student knowledge to all four quadrants. Students graph geometric figures on the coordinate plane and do initial calculations of distances that are a straight line. Students conclude the unit by investigating the reflections of figures across the x- and y-axes on the coordinate plane.